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OpenCloudOS-Kernel/arch/s390
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David Hildenbrand 8736604ef5 s390/uv: Don't call folio_wait_writeback() without a folio reference 
[ Upstream commit 3f29f6537f54d74e64bac0a390fb2e26da25800d ]

folio_wait_writeback() requires that no spinlocks are held and that
a folio reference is held, as documented. After we dropped the PTL, the
folio could get freed concurrently. So grab a temporary reference.

Fixes: 214d9bbcd3 ("s390/mm: provide memory management functions for protected KVM guests")
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-2-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-08-03 08:53:48 +02:00
..
appldata sysctl: Add size to register_sysctl 2023-08-15 15:26:17 -07:00
boot s390/boot: Remove alt_stfle_fac_list from decompressor 2024-06-12 11:12:33 +02:00
configs cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-20 17:01:51 +01:00
crypto crypto: s390/aes - Fix buffer overread in CTR mode 2024-01-31 16:18:50 -08:00
hypfs s390 updates for 6.6 merge window 2023-08-28 17:22:39 -07:00
include s390: Mark psw in __load_psw_mask() as __unitialized 2024-07-18 13:21:15 +02:00
kernel s390/uv: Don't call folio_wait_writeback() without a folio reference 2024-08-03 08:53:48 +02:00
kvm KVM: s390: fix LPSWEY handling 2024-07-11 12:49:12 +02:00
lib s390: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-09 15:20:50 +02:00
mm s390/mm: Add NULL pointer check to crst_table_free() base_crst_free() 2024-07-18 13:21:20 +02:00
net Revert "bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()" 2024-07-09 11:44:29 +02:00
pci s390/pci: Add missing virt_to_phys() for directed DIBV 2024-07-05 09:33:46 +02:00
purgatory s390 updates for 6.5 merge window part 2 2023-07-06 13:18:30 -07:00
tools
…
Kbuild - An extensive rework of kexec and crash Kconfig from Eric DeVolder 2023-08-29 14:53:51 -07:00
Kconfig kexec: fix KEXEC_FILE dependencies 2024-01-05 15:19:41 +01:00
Kconfig.debug
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Makefile kbuild: unify vdso_install rules 2024-06-12 11:12:32 +02:00